Sending DTTG 3 to the background while running OCR on a multi-page PDF results in multiple corrupt files and an error message. Running OCR on the same PDF while DTTG 3 is open delivers an accessible PDF with a text layer as it should. The original file remains fine.
Sorry for that, the example happens to be a health care file and I neglected to elaborate: Every single listed file you see in the screenshot resulted from running OCR on the PDF which is marked as original, also the zero kB ones.
No. The 6 files in the screenshot are the sole outcome of running OCR on a 17-page PDF. For this particular PDF I tried several times and it’s always six files. Not all of them are marked as zero kB but none of them is readable.